Biosolids program contacts

For general questions about biosolids, or the statewide or national programs, speak with someone in our headquarters office.

If you are an operator looking for information or help with permit fees or your annual report, contact our headquarters office.

For questions about a facility permit or a land application site, including complaints, status, technical requirements, the application process, and opportunities for public comment, contact our regional staff.

Statewide policy, technical issues, and agency inquiries:

Blake Nelson
State biosolids program coordinator​ (interim)

Biosolids general permit development, notices of intent, opportunities to comment, and joining interested parties:

Emily Kijowski
Biosolids technical specialist​

Permit fees and invoices:

Michelle Andrews

Regional offices:

Contact your regional office for information about specific facilities and permit conditions.

Eastern region

Mounia Sassi
Eastern regional biosolids program coordinator
Biosolids and septage permits and related issues for seven Eastern Region counties:

  • Grant
  • Ferry
  • Lincoln
  • Pend Oreille
  • Spokane
  • Stevens

Terri Costello
Eastern regional biosolids program coordinator
Biosolids and septage permits for these counties:

  •  Adams
  • Asotin
  • Columbia
  • Garfield
  • Franklin
  • Walla Walla
  • Whitman

Central region

James Rivard
Central regional biosolids program coordinator (interim)
Biosolids (non-septage) permits in the Central Region

Canming Xiao
Central regional biosolids program coordinator
Septage permits for these counties:

  • Benton
  • Kittitas
  • Klickitat
  • Yakima

Terri Costello
Eastern regional biosolids program coordinator
Septage permits for these counties:

  • Chelan
  • Douglas
  • Okanogan

Northwest region

Amber Corfman
Northwest regional biosolids program coordinator
Biosolids and septage permits in the Northwest Region

Southwest region

Shawnté Greenway
Southwest regional biosolids program coordinator
Biosolids and septage permits in the Southwest Region

Eddie Simons